How do you use a hero in a battle? I have a Hero Command. I click on it and then "Mobilize", I trained Han Solo and he shows "Standing by". The screen says "select a hero to mobilize" but nothing happens when I select Han. Maybe I'm to early in the game where it won't allow me to. I've had the Hero Command for a while but I just finished the mission that required me to build it. Figured I'd be able to use my Hero on the next mission but nope.